Acquisitions (Allocation Of Acquisition Costs) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Cash	$ 236	$ 394
Estimated fair value of deferred/contingent consideration	95	140
Total Consideration	331	534
Allocation of purchase price:
Goodwill	7,381	$ 7,230	$ 7,241	$ 6,893
Current Fiscal Period Acquisitions [Member]
Business Acquisition [Line Items]
Cash	236
Estimated fair value of deferred/contingent consideration	95
Total Consideration	331
Allocation of purchase price:
Cash and cash equivalents	5
Accounts receivable, net	8
Property, plant, and equipment	2
Intangible assets	138
Goodwill	188
Other assets	2
Total assets acquired	343
Current liabilities	9
Other liabilities	3
Total liabilities assumed	12
Net assets acquired	$ 331